Gear-case.



A. N. CRAMER.

GEAR CASE.

APPLICATION FILED JULY 18. 1918'.

Patented J an; 21, 1919.

WITNESS .mml run: as. mnrnumr TED STATES PATEN AUGUST N. CRAMER, OFBROOKLYN, NEW YORK, ASSIGNOR TO COLUMBIA MACHINE WORKS 8c MALLEAIBLEIRON 00., OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

GEAR-CASE.

Specification of Letters Patent.

Patented Jan. 21, 1919.

Application filed July 18, 1918. Serial No. 245,479.

To all whom it may concern:

Be it known that I, AUGUST N. GRAMER, a citizen of the United States,residing in the borough of Brooklyn, county of Kings, city and State ofNew York, have invented an Improvement in Gear-Cases, of which the thefollowing is a specification.

This invention relates to that type of gear cases employed in connectionwith motor vehicles and more particularly with motor vehicle trucks. Inthe use of gear cases heretofore commonly employed in this type ofvehicle trucks, much difficulty has been experienced in the breaking ofthe gear cases at the points at which they are mounted in the truck, dueprimarily as will be understood, to the torsion and other strains placedon the gear cases at their points of connection in the vehicle. Theobject of the present invention therefore is to overcome this diflicultyby producing a gear case in which the parts of support are so designedas to increase the strength of the same to a maximum and consequentlyreduce the liability of breaking by torsion or strains to which they aresubjected to a minimum, and the gear case made in accordance with mypresent invention will be hereinafter more particularly described.

In the drawing:

Figure 1 is a front elevation of one member of a gear case made inaccordance with this invention.

Fig. 2 is an inverted plan view of the same.

Fig. 3 is an end elevation of the left hand end of the gear case memberas shown in F ig'. 1. I

Fig. at is a partial elevation of a gear case illustrating a modifiedform of the inventlon, and

Fig. 5 is an end elevation of the form of gear case illustrated in Fig.4.

Referring to the drawing, and particularly 9 to Figs. 1, 2 and 3, thegear case comprising this invention is made in parts, one of which isshown in these figures, and each part consists in side members 10 and 11made in the required size and shape and of any suitable metal. Theseside members 10 and 11 at their ends are preferably turned inwardly ortoward each other and caused to abut against one another, the endmembers of the side 10 being indicated at 12 and'the end members of theside 11 being indicated at 13. Together with the side members 10 and 11I employ a cover 14.

At its edges the cover is flanged at 15 for a predetermined distance,and these flanges fit over the adjacent edges of the side members 10 and11 and are secured thereto by rivets 15 or otherwise.

The construction at the ends of each member of the gear casing issubstantially similar. Referring however to the left hand end of thepart of the gear casing shown in Fig. 1 it will be seen that the flange15 terminates an appreciable distance short of the end of the cover 14:and at its extremity the cover 14 is provided with a flange 16 which isturned outwardly or on an opposite direction to the flange 15, andbetween the ends of the flange 16, the cover 14: terminates 1n a supportmember 17. Associated with this end of the gear case I employ a bracket.This bracket comprises side members 18 and 19, a front member 20 adaptedto lie against the outer faces of the adjacent ends 12 and 13 0f theside members 10 and 11. Forming a part of this bracket there is also asupport plate 21 adapted to underlie the support plate 17. Fittingbetween the support plates 17 and 21 there is an insert plate 22. Thisinsert plate'may be made of the same or a material of different tensilestrength to the other parts of the gear case, and is preferably flangedas indicated at 23, these flanges lying against the adjacent surfaces ofthe side members 18 and 19. It will be noted that the side plates 18 and19 extend an appreciable distance beyond the cover let and this extendedportion is indicated at 24:. The support plates 17 and 21 with theintervening insert plate 22 are secured to one another by rivets 25 orotherwise, and preferably centrally these parts are also fitted with abolt hole 26. The flanges on the insert plate 22 are secured to the sidemembers 18 and 19 of-the bracket by rivets 27 or otherwise, and the sideplates 18 and 19 are secured to the side members 10 and 11 by rivets 28or otherwise. Furthermore the front plate 20 may be connected to theinturned ends of the side members 10 and 11 by rivets 28 or otherwise.The side plates 18 and 19 and the adjacent portions of the side members10 and 11 may be recessed as indicated at 29 to receive the drive shaftand parts connected thereto, while as clearly indicated in Figs. 1 and2, the side members 10 and 11 may .be recessed as indicated at 30 so asto fit over the axle of the vehicle.

The construction at the other end of this gear case member issubstantially the same as that hereinbefore described with the excepboltholes 26 for securing the parts in position.

3 Referring to- Figs. 4 and 5 it will be seen that .the side members ofthe partof the casing are indicated at 31 and 32; the cover is indicatedat 33, and this is provided with flanges 34L secured to the sides3l and32 by rivets 34L or otherwise. In this construction the. cover 33extends beyond theflan'ge 34 as indicated at 35, and terminates in asupport plate'36 in substantially the same manner as the cover 14 asillustrated in the I preferred form of the invention. In thisconstruction however, instead of employing separate independent bracketsas described in the preferred form of the inventions, the ends of theside members 31 and 32 may be extendedas indicated at37 and 38. Theextremity of the cover 33 is flanged as indicated at 39 and40, theseflanges bearing respectively against the inner surfaces of the sidemember extensions 37 and 38. In this form of the invention I employ aninsert plate indicated 'at ll 'lying against the support plate 36 andconnected thereto by rivets 42 orotherwise. This insert plate has anupwardly extending portion 43 which conforms to and lies against the endof the cover 33- within. the flanges 39 and 40. The extremity 36 of thecover33 and the insert plate 4C1 maybe provided with a bolt hole AA bywhich these parts are connected to positionwith the cross pins ofthe'chassis of the vehicle truck.

Now as will'be readily understood, the strength of the support membersof the gear case, as made in accordance with this invention will be suchas to withstand"the ordinary tensile and other strains to which the sameare subjected. in the use of th vehicle.

I claim as my invention:

1. In a gear case part, sides, a cover having inturned flanges to whichthe sides are secured and outturned flanges at its extremities, asupport member extending between the outturned flanges at the end of thecover, and. a reinforcing member secured to'the said support member.

2. Ina gear case part, sides, a coverhaving inturned flanges extendingfor a portion of its length and to which the'said sides are secured andoutturned flanges at the end thereof, a support member extending betweenthe outturned flanges at the end of the said cover, and a bracketcomprising side members, a front member, and a support plate secured tothe said support member at the extremity of the said cover.

3. In a gear case part, sides, acover .having inturned flanges extendingfor a portion of its length and to which the'said sides are secured andoutturn'ed 'flangesiat the end thereof, a support member extendingbetween the outturned'flanges at theend of the said cover,a'bracketcomprising side members, a front member, and a support plate,an insert member between the said thereof, a bracket comprising sidemembers secured to the aforesaid sides, afro'nt m'emher, and a supportplate, an insertmemb'erlying between the said support member and supportplate and having'fl'anges secured to the side members'of'thebracket, andmeans for connecting the saidsupport member, support plate, withtheintervening insert member. 7 Y

5. In a gear case part,sides which at their support member'and' supportplate, and

extremities are inturned and cause'to abut against one another, a coverhaving inturned flanges extending for a predetermined portion of itslength and-to which the said sides are connected, 'the said'cover end ofthe cover, an insert member" lying between thesaid support memb'erandfsupport plate and-having outtu'rned "flanges which are secured to theside -membersof the. bracket, and'means for securingtogether the saidsupport member, the supportpl'ate with the "intervening insert member.

Signed by mefthis l9 'dayfof June,"19*1 8.

AUGUST- N. CRAMER.

Copies of this patent may be obtained for five cents each,' byaddressing the Commissioner of Eatentn, -'Washington,D.' I). 9

